Would upgrading the capacitors require me sending the amp in or is that something I could do on my own?If you're asking then I'd suggest you're not qualified to do the upgrade. It's something you could research and do or you could just find a tech in your area. Accidentally shorting a couple of fully charge power Caps can be dangerous the you and the amp.
IF you're seriously considering this why not contact Mark and ask him if he's offering any updates to your amp. He's a pretty knowledgeable guy.
https://www.dagogo.com/an-interview-with-mark-obrien-of-rogue-audio/
http://rogueaudio.com/FAQ.htm